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bf8ef9fdc3
This is a repeat of 1880092722 from 2009. We should have less risk of hitting bugs at this point because we auto-generate positive CHECK lines only, but this makes things consistent. Copying the original commit msg: "Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename."
237 lines
6.3 KiB
LLVM
237 lines
6.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; Should fold
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; (%x + %y) u>= %x
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; or
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; (%x + %y) u>= %y
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; to
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; @llvm.uadd.with.overflow(%x, %y) + extractvalue + not
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;
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; All tests here have extra uses, to ensure that the pattern isn't perturbed.
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declare void @use8(i8)
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declare void @use2x8(<2 x i8>)
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define i1 @t0_basic(i8 %x, i8 %y) {
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; CHECK-LABEL: @t0_basic(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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define <2 x i1> @t1_vec(<2 x i8> %x, <2 x i8> %y) {
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; CHECK-LABEL: @t1_vec(
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; CHECK-NEXT: [[T0:%.*]] = add <2 x i8> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use2x8(<2 x i8> [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge <2 x i8> [[T0]], [[Y]]
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; CHECK-NEXT: ret <2 x i1> [[R]]
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;
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%t0 = add <2 x i8> %x, %y
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call void @use2x8(<2 x i8> %t0)
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%r = icmp uge <2 x i8> %t0, %y
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ret <2 x i1> %r
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}
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; Commutativity
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define i1 @t2_symmetry(i8 %x, i8 %y) {
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; CHECK-LABEL: @t2_symmetry(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[X]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %x ; can check against either of `add` arguments
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ret i1 %r
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}
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declare i8 @gen8()
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define i1 @t3_commutative(i8 %x) {
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; CHECK-LABEL: @t3_commutative(
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%y = call i8 @gen8()
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%t0 = add i8 %y, %x ; swapped
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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define i1 @t4_commutative() {
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; CHECK-LABEL: @t4_commutative(
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; CHECK-NEXT: [[X:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X]], [[Y]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[Y]], [[T0]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%x = call i8 @gen8()
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%y = call i8 @gen8()
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ule i8 %y, %t0 ; swapped
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ret i1 %r
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}
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define i1 @t5_commutative(i8 %x) {
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; CHECK-LABEL: @t5_commutative(
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; CHECK-NEXT: [[Y:%.*]] = call i8 @gen8()
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[Y]], [[X:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[Y]], [[T0]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%y = call i8 @gen8()
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%t0 = add i8 %y, %x ; swapped
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call void @use8(i8 %t0)
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%r = icmp ule i8 %y, %t0 ; swapped
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ret i1 %r
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}
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; Extra-use tests
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define i1 @t6_no_extrause(i8 %x, i8 %y) {
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; CHECK-LABEL: @t6_no_extrause(
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; CHECK-NEXT: [[TMP1:%.*]] = xor i8 [[Y:%.*]], -1
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[TMP1]], [[X:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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%r = icmp uge i8 %t0, %y
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ret i1 %r
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}
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; Negative tests
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define i1 @n7_different_y(i8 %x, i8 %y0, i8 %y1) {
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; CHECK-LABEL: @n7_different_y(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y0:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp uge i8 [[T0]], [[Y1:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y0
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call void @use8(i8 %t0)
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%r = icmp uge i8 %t0, %y1
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ret i1 %r
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}
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define i1 @n8_wrong_pred0(i8 %x, i8 %y) {
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; CHECK-LABEL: @n8_wrong_pred0(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ule i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ule i8 %t0, %y
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ret i1 %r
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}
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define i1 @n9_wrong_pred1(i8 %x, i8 %y) {
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; CHECK-LABEL: @n9_wrong_pred1(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ugt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ugt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n10_wrong_pred2(i8 %x, i8 %y) {
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; CHECK-LABEL: @n10_wrong_pred2(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X]], 0
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp eq i8 %t0, %y
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ret i1 %r
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}
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define i1 @n11_wrong_pred3(i8 %x, i8 %y) {
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; CHECK-LABEL: @n11_wrong_pred3(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X]], 0
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp ne i8 %t0, %y
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ret i1 %r
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}
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define i1 @n12_wrong_pred4(i8 %x, i8 %y) {
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; CHECK-LABEL: @n12_wrong_pred4(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp slt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n13_wrong_pred5(i8 %x, i8 %y) {
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; CHECK-LABEL: @n13_wrong_pred5(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sle i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sle i8 %t0, %y
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ret i1 %r
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}
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define i1 @n14_wrong_pred6(i8 %x, i8 %y) {
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; CHECK-LABEL: @n14_wrong_pred6(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sgt i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sgt i8 %t0, %y
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ret i1 %r
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}
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define i1 @n15_wrong_pred7(i8 %x, i8 %y) {
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; CHECK-LABEL: @n15_wrong_pred7(
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; CHECK-NEXT: [[T0:%.*]] = add i8 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: call void @use8(i8 [[T0]])
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; CHECK-NEXT: [[R:%.*]] = icmp sge i8 [[T0]], [[Y]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%t0 = add i8 %x, %y
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call void @use8(i8 %t0)
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%r = icmp sge i8 %t0, %y
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ret i1 %r
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}
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